title: Degradation of polychlorinated naphthalene by mechanochemical treatment.
abstract: Polychlorinated naphthalene (PCN) is a hazardous compound that is listed as a new persistent organic pollutants candidate by the United Nations Environment Program. The production, import and use of PCNs are prohibited by the Chemical Substances Control Law in Japan. PCN was milled with calcium oxide as an additive to investigate the feasibility of its degradation by mechanochemical treatment. The milling process cleaved the C-C and C-Cl bonds by the mechanically induced solid-state reaction. Gas chromatography/mass spectrometry analysis confirmed that the PCN was decomposed after 1h milling. The yield of chloride ions reached 100% after 3h milling. This indicates that all PCN was broken down into inorganic compounds after milling, thereby maintaining the chlorine mass balance through the reaction. This experiment, for the first time, exhibited the effectiveness of mechanochemical treatment as a PCN degradation method.
authors.affiliation: Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka, Koganei, Tokyo 184-8588, Japan. Electronic address: nomura-yuugo@jqa.jp.
authors.forename: Yugo
authors.initials: Y
authors.lastname: Nomura
authors.forename: Sho
authors.initials: S
authors.lastname: Aono
authors.forename: Takashi
authors.initials: T
authors.lastname: Arino
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Akihiko
authors.initials: A
authors.lastname: Terada
authors.forename: Yukio
authors.initials: Y
authors.lastname: Noma
authors.forename: Masaaki
authors.initials: M
authors.lastname: Hosomi
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D015386:Hazardous Substances / Q000737:chemistry*; D007564:Japan; D008956:Models, Chemical; D009281:Naphthalenes / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D015386:Hazardous Substances; D009281:Naphthalenes; D010087:Oxides; C031721:naphthalene; C016538:lime
keywords: Dechlorination; Decomposition pathway; Mechanochemical; PCN; Polychlorinated naphthalene